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The objective of this work is to model initially, the different components of a single-bed adsorption system with intermittent cold production operating with hot water coming from either biogas (from methanation of animal organic waste), or a flat sensor. Then, in a second step, to the Simulink resolution to determine the evolutions of the desorption temperatures for the two working couples (Thmax of 180 °C and 220 °C), of the adsorbed fraction (6 kg/s for the zeolite water and 4 kg/s for silica gel-water), COP (coefficient of refrigeration performance) of the order of 0.34 for silica gel-water and 0.4 for zeolite-water. These results were compared to those found in the literature for validation. It should be noted that the heat transfer fluid used is water, which has a cold production range between 0 °C and 10 °C (cooling applications) and that modeling uses the Dormand-Price OD45 method.

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This paper presents a study on the thermal characterization of laterite used as a building material. In Senegal, laterite has been used in construction on a semi-industrial scale since the 1990s through projects aimed at promoting local materials that can contribute to the energy efficiency of buildings. The aim of the work is to determine the thermal characteristics of a composite (laterite + peanut shell). The results showed that the pure laterite specimens have a higher conductivity than the laterite + peanut shell composite specimens. The formulation BTS10-12,5–4 has a thermal conductivity of 0.48 W.m-1.K-1, the bricks of this formulation can then be classified as insulating earth bricks.The thermal performance of the material has been improved by the addition of peanut shells.